Upgrading Drupal

Okay here's the situation. I've searched a fair bit here on drupal as well and I'm now aware of where I went wrong.

I copied all the files EXCEPT for .htaccess

Since I moved and canceled the other webhost, they've backedup and empty site. Now I can't go back and get .htaccess. I couldn't have gotten it anyways on my own since I don't have SSH access to my last webhost (IXwebhosting is miserable).

Here is the question:

Hi I just upgraded to 512 and everything looked perfect. It is a multisite installation. I added the admin menu and it works great for user one. When I tried to grant access the site administrator, the checkboxes appeared normal, but when I saved them. They reverted back to blank.

Modules that already existed, have no problems with changing access to them. checked the perms on everything up to modules directory.

I have watched part of the video on upgrading, but I'm not clear as to whether I have to upgrade from 6.4 to 6.6 in two steps or in one.

Thanks,

Greg

Hi

I have upgraded from D5 to D6
now i try to import ar language, but i get some errors concerning with some language tables. I gave searched drupal site but I could not find problems like it nor upgrade.txt has any idea about new table for translations

When I try to import some .po files for Arabic languge
i get this errors

* warning: Cannot modify header information - headers already sent by (output started at /home/mathn/public_html/math/includes/database.mysql.inc:128) in /home/mathn/public_html/math/includes/common.inc on line 141.
    * user warning: Table 'mathn_02.languages' doesn't exist query: SELECT * FROM languages ORDER BY weight ASC, name ASC in /home/mathn/public_html/math/includes/bootstrap.inc on line 1086.
    * warning: Invalid argument supplied for foreach() in /home/mathn/public_html/math/includes/form.inc on line 1189.
    * warning: Invalid argument supplied for foreach() in /home/mathn/public_html/math/includes/locale.inc on line 71.

warning: Cannot modify header information - headers already sent by (output started at /home/mathn/public_html/math/includes/database.mysql.inc:128) in /home/mathn/public_html/math/includes/common.inc on line 141.

Two steps in the upgrade.txt are quite time consuming for a multisite setup:
* place each site off-line and on-line again after running update.php
* this is worse: disabling all contributed modules and then re-enabling them after running update.php (also includes keeping a list of enabled modules for each site)

Can this be done in a better way?

I attempted to upgrade my site using Drupal 6.2 to 6.5. I have several errors so I restored the site and database from backups. The appearance of the site looks fine now, and the content on the front page is displaying correctly, however the majority of my links are now broken. The only links that work, are ones that don't utilize "clean urls".

Now for the really crappy part.....

Being that the admin page uses example.com/admin, I am unable to login. I tried using ?q=admin, however that just brings me to my "please login" page (as it should).